“By placing these reservations early, we will make our dollars go further and ensure we have the air time to effectively fight back against the flood of Koch brothers’ dollars,” House Majority PAC Executive Director Alixandria Lapp said in a statement.

The super PAC is on offensive in six Republican-held districts and on defense in 18 Democratic districts. Often, releasing ad reservations to the press is a means to telegraph to allies, like the Democratic Congressional Campaign Committee, how outside groups intend to spend money.

Below is a breakdown of the buys, categorized by offensive and defensive targets: